US2320659A - Material handling device - Google Patents

Material handling device Download PDF

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Publication number
US2320659A
US2320659A US411093A US41109341A US2320659A US 2320659 A US2320659 A US 2320659A US 411093 A US411093 A US 411093A US 41109341 A US41109341 A US 41109341A US 2320659 A US2320659 A US 2320659A
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US
United States
Prior art keywords
roller
rollers
work
driving
press
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US411093A
Inventor
Sahlin Henry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
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Motors Liquidation Co
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Publication date
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Priority to US411093A priority Critical patent/US2320659A/en
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Publication of US2320659A publication Critical patent/US2320659A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02Advancing work in relation to the stroke of the die or tool
    • B21D43/04Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/647With means to convey work relative to tool station
    • Y10T83/6579With means to press work to work-carrier
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/647With means to convey work relative to tool station
    • Y10T83/664Roller
    • Y10T83/6644With work-supplying reel

Description

June 1, 1943. H. SAHLIN 2,320,659

MATERIAL HANDLING DEVICE Filed Sept. 17, 1941 3 Sheets-Sheet l 3 Sheets-Sheet 2 H. SAHLIN MATERIAL HANDLING DEVICE Filed Sept. 17, 1941 INVENTOR. fif/Y/fl 0390 4/44 roe/vim June 1, 1943.

June 1, 1943. H. SAHLIN MATERIAL HANDLING DEVICE Filed Sept. 17, 1941 3 Sheets-Sheet 3 Patented June 1,

MATERIAL HANDLING nuvrcr:

Henry Sahlin', Detroit, Mich. assilnor to General Motors Co p ration, Detroit, Mich, a corporation of Delaware Application September 17, 1941, Serial No. 411,093

'9 Claims. (01. 164-49) This invention relates to a material handling device and more particularly to a device useful either for loading or removing work from a machine. The device is particularly useful for removing fiat pieces of material from a press or for loading fiat pieces of material into a press.

A device for unloading or loading a press, for example, must perform without scratching or scoring the work. It is the object of this invention to produce a material handling device which will efiiciently load or unload a press or other machine without scoring or scratching the work.

Another advantage of the present device is that it eliminates the need for manually reaching into and removing the work from the press or other machine which is accompanied by considerable risk. Thus, this device makes the operation of a. machine, such as a press, more safe.

In the drawings:

Fig. l is a vertical section through the material handling device along the line i-I of Fig. 3 showing the device used as a work loader.

Fig. 2 is a top plan view partly in section along the line 22 of Fig. 3.

Fig. 3 is a front elevation of the machine.

Fig. 4 is an end elevation partly in section along the line 4-d of Fig. 3.

Fig. 5 is a section along the line 55 of Fig. 3.

Fig. 6 is a sectional view similar to Fig. 1 showing the device used as a work remover.

For purposes of description the device is shown for use on a blanking press comprising a lower stationary die i and an upper reciprocating die 2. The press operates on a metal strip 3 to cut it into blanks of a predetermined size. The strip 3 comes in the form of a coil 5 rotatably supported on the spindle 4.

The device for feeding the strip into the press comprises a pair of rollers, the upper of which is designated 6 and the lower of which is designated 1. Rollers 6 and i can be made from any suitable material. Where the device is operating on strip steel, such as designated 3, steel rollers have been found satisfactory. The upper roller 6 is fixed upon a pair of stub shafts 8 and 3 mounted in ball bearing races l0 and I I respectively. The races ill and H are supported in the brackets l2 and i3 which are bolted or otherwise secured to the main frame 14 of the device.

Roller 6 is positively driven by means of an electric motor I5, the shaft of which is coupled to driving shaft I6 which is journaled in stationary supports l1 and I8. Pulleys l9 and 26 are fixed respectively on shafts 8 and it. v belts 2i transmit the drive from pulley 20 to pulley is. Therefore, the drive from motor I! to'upper roller 6 comprises shaft l6, pulley 23, belts 2|, pulley l3 and shaft 9.

Roller I, during the removal or feeding of the work 3, is an idling roller. It is essential that the roller 1 should be traveling at the same angular speed. as the roller 6 when it comes in contact with the work so that the work will be gripped evenly and not scratched. As herein shown, by way of description, the roller! is of the same size or diameter as the roller 6 so that to achieve the same angular or surface speed between the rollers 6 and I it is only necessary to have each make the same number of revolutions per minute. To this end roller 1 is fixed at each end on a pair of stub shafts 22 and 23 which are journaled in brackets 24 and 25'respectively. A brace in the form of a tubular member 26 is fixed at one end to bracket 24 and at the other end to bracket 25 naled in bearing support 33 which is mounted on the main frame IQ of the device. A driving roller 34 is fixed on the end of shaft 3! opposite the pulley 30. This roller 34, when the roller 1 is lowered, drives roller 35 fixed on stub shaft 23 which supports one end of roller i (Fig. 2). Thus, the drive for roller I consists of motor l5, shaft l6, pulleys 29 and 30, belt 32, shaft 3i, rollers 34 and 35. This drive is arranged so that the roller i rotates at the same speedas the roller 6.

For raising and lowering the roller 1 there is provided an air cylinder 36, piston 31 therein having a rod 38 connected to pivoted frame member 26 by pin 33. An air line 43 connects the cylinder 36 with a source of compressed air (not shown). A valve generally designated 4! is inserted in the air line 46. This valve is a conventional well-known valve which in one position connects the cylinder 36 with a source of compressed air (full line showing, Fig. 1) and in open position closes off the line to the source of compressed air and exhausts the cylinder 36 to atmosphere.

The operation of the device is as follows: Motor i5 and drive shaft "5 run continuously so that roller 6 and driving roller 34 are rotating continuously. After the die 2 has cut a blank from strip 3, it starts on its upward travel. As

shown in Fig. l, the upper die 2 of the press ison the way up. Cam 42 has swung pivoted lever 43 upwardly to the full line position, Fig. 1, thus 4| will shut ofl cylinder 36 from the source ofcompressed air and exhaust the same to atmosphere whereupon piston 31 will move downwardly under the action of compression spring 44 in cylinder 36 to lower roller I, to the dotted line position, out of engagement with the strip 3. As soon as roller 1 moves away from roller 6, the strip 3 likewise falls slightly away from, and out of driving relation with roller 6 and thus the feed of the work automatically stops. 7

The downstroke oi the die 2 does not affect valve 4| because cam 42 rides by the pivoted finger 45 carried on lever 43 andthe cylinder 36 remains open to atmosphere. However, on the return or upstroke of the die 2, cam 42 acts through pivoted finger 45 and lever 43 to shift the valve 4| to the position shown in the full lines and again place cylinder36 in communication with the source of compressed air which raises roller 1 so that the work 3 is gripped between rollers l and 6 and fed into the press as indicated by the arrow.

Whenever the roller I is lowered, rollers 34 and 35 are in driving relation so that the roller 1 rotates at the same speed as the roller 6. When the roller 1 is raised, roller 35 is withdrawn from driving engagement with roller 34. But the raising of the roller 1 into engagement with the work is practically instantaneous so that due to the inertia of the roller its speed is the same as that of roller 6 when these rollers grip the strip 3 between them and feed the strip into the press.

In Fig. 6'the device is identical with that described above except that it is here arranged for withdrawing the blank from the press rather than for feeding the strip into the press. In this case the sheet steel strip 56 comes in the form of a coil which is intermittently driven by means (not shown) to feed the strip 5| into the blanking press. It will be noted that the end 52 of the strip 60, prior to being blanked, is fed between rollers 6 and I, roller 1 at this time being lowered. The blank which is cut from strip 56 is designated 53. 7

As shown in Fig. 6 in the full lines, the roller 1 is lowered because valve 4| has closed off the source of compressed air and opened cylinder 36 to atmosphere. The die 2 is on the way down and thus cam 42 will pass by pivoted finger 45 without operating valve 4| which has cylinder 36 in communication with the atmosphere. As soon asthe blank 63 is cut from strip 50, die 2 starts upwardly whereupon cam 42 strikes finger 46 and shifts lever 43 to the dotted line position Fig. 6, which operates valve 4| to place cylinder 36 in communication with the source 'of compressed air. At this time roller 1' is elevated quickly whereupon it cooperates with roller 6 to grip the cut blank 63 and remove the same leftward out of the press in the direction of the arrow. The position of the cut blank 63 when gripped between rollers 6 and 'I is shown in P18. 6. The feeding of the strip 60 into the press will, of course, be arranged to take place while the die 2 is raised and while the blank 33 is being removed or immediately thereafter.

It is evident from the above that this mate rial handling device is efficient in operation, will load or unload the work as fast as the press can operate on the same, and that it will thus speedily load or unload the press without inJuring the work.

I claim:

1. A material handling device for handling material without scratching or marring' the same comprising a pair of rollers adapted to move relatively toward and away from each other and to receive work therebetween, means for driving the rollers at substantially the same speed, the said means directly driving one of the said rollers continuously and directly driving the other of said rollers only when the rollers are moved relatively away from each other whereby when the rollers are moved toward each other they are both rotating at substantially the same speed and grip the work therebetween and transport the same and the second mentioned roller serves as an idling pressure roller.

2. A material handling device for handling material without scratching or marring the same comprising a pair of rollers, one of said rollers being shiftable toward and away from the other roller, means for continuously driving one of said rollers, and means for driving the other of said rollers only when shifted away from the continuously driven roller, said rollers being adapted to receive work therebetween whereby the rollers while both are rotating can be brought together to grip the work and transport the same and said other roller serves as an idling pressure roller.

3. A material handling device comprising a pair of rollers, a stationary support for one of said rollers and a shiftable support for the other of said rollers whereby the rollers can be shifted toward each other to grip and transport work therebetween and away from each other to release the work, and means for driving the rollers at substantially the same speed, the said means continuously driving one of said rollers and driving the other of said rollers only when shifted away from the continuously driven roller whereby when the shiftable roller is shifted towards the other roller to grip the work it' rotates as an idling pressure roller at substantially the same speed as the other roller and grips the work without scratching the same.

4. A material handling device comprising a pair of rollers, a stationary support for one of said rollers and a shiftable support for the other of said rollers whereby the rollers can be shifted toward each other to grip and transport work therebetween and away from each other to release the work, means for driving the rollers r at substantially the same speed, the said means continuously driving one of said rollers and driving the other of said rollers only when shifted away from the continuously driven roller whereby when the shiftable roller is shifted towards the other roller to grip the'work it rotates as an idling pressure roller at substantially the same speed as the other roller and grips the work without scratching the same, and means for shifting the shiftable roller toward and away from the other roller.

aazopoo '5. A material handling device comprising a pair of rollers adapted to receive work therebetween. a stationary support for one of said rollers, a shiftable support for the other of said rollers, means for continuously driving the one roller while the device is in operation, and means including a breakable driving connection for driving the shiftable roller only when shifted away from the other roller free from the work, and means for shifting the said roller toward the other roller whereby the driving connection for the shiftable roller is broken and the same freewheels as it moves toward the other roller into gripping relation with the work whereupon the said shiftable roller serves as an idling back up 'roller for the continuously driven roller as the work is transported.

6. A material handling device comprising a pair of opposed rollers adapted -to grip work therebetween and transport the same, one of said rollers being shiftable toward and away from the other roller, means for continuously driving one of the said rollers when the device is operating whereby said roller serves as the driving roller for transporting the work, and means for driving the shiftable roller only when shifted away from the other roller out of work gripping and transporting position, the said means driving the said rollers at substantially the same speed whereby when the shiftable roller is shifted out of driving relation with its driving means it rotates freely at substantially the same speed and in the same direction at the point of contact with the work as the other roller and upon engaging the work serves as an idling back-up roller for the other roller in the transporting of the work. I

'l. A material handling device comprising a first roller, a second roller, and a third roller. a stationary support for the first and second rollers, a shiftable support for the third roller whereby the third roller can be shifted toward and away from the first and second rollers, means for continuously driving the first and second rollers when the device is in operation, the first and third rollers adapted to receive and grip work therebetween for transporting the same, and means for driving the third roller from the second roller when the third roller is shifted toers and for driving the other of ward the second roller and out of work gripping relation with the first roller, the first and third rollers being driven at substantially the same speed whereby when the third roller is shifted toward the first roller the driving connection with the second roller is broken and the third roller cooperates with the first roller. to grip the work therebetween and transport the same, the

first roller serving as the driving roller for the work and the third roller serving as a back-up roller for holding the work against the first roller.

8. In combination with a press having stationary and reciprocating die members, -a device for transporting the work relative to the press comprising a pair of rollers adapted to move relatively toward and away from each other and to grip the work therebetween, and means synchronized with the said press for bringing the rollers into gripping relation with the work to transport the same relative to the press when the stationary and reciprocating dies are separated, means for continuously driving oneof said rollwhen shifted away from the other roller in nonwork gripping position, the said means driving each of the rollers at the same speed whereby when the rollers are brought ping position the work is gripped evenly and without scratching or scoring the work and said other roller serves as an idling pressure roller.

9. In combination with a press having a stationary and a reciprocating die, comprising a par of rollers positioned adjacent the press and adapted to receive the work therebetween, one of said-rollers being shiftable toward and away from the other of said rollers, means for continuously driving the one roller and means for driving the shiftable roller at substantially the same speed as the other roller only while the shiftable roller is away from the other roller, and means controlled by the operation of the press for shifting the shiftable roller toward the other roller into work gripping position when the dies are separated whereby the shiftable roller is rotating freely as it contacts the work and serves as a back-up roller for the other roller in transporting the work relative to the press.

' HENRY SAHLIN.

said rollers only into work grip-

US411093A 1941-09-17 1941-09-17 Material handling device Expired - Lifetime US2320659A (en)

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Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583051A (en) * 1948-03-13 1952-01-22 Coe Mfg Co Veneer clipper
US2613739A (en) * 1948-01-23 1952-10-14 Lefere Forge & Machine Company Shear accessory
US2619347A (en) * 1949-06-20 1952-11-25 Le Roy Krasley Cloth handling and transferring means
US2626146A (en) * 1949-07-08 1953-01-20 Henry G Goetz Precision strip feed mechanism
US2634973A (en) * 1948-12-21 1953-04-14 Peter J Hahn & Sons Company Foil feeding device for stamping machines
US2638821A (en) * 1950-07-12 1953-05-19 John R Baumgartner Blank forming press feed
US2647455A (en) * 1947-02-24 1953-08-04 Denison Eng Co Hydraulic apparatus
US2660427A (en) * 1948-06-26 1953-11-24 Haller John Feeding device for sheet material
US2704576A (en) * 1955-03-22 Sheet material dispensing machine
US2745663A (en) * 1953-08-14 1956-05-15 United States Steel Corp Strip supporting device
US2787954A (en) * 1953-06-22 1957-04-09 Smith Paper Mills Ltd Howard Paper roll marking apparatus
US2811063A (en) * 1953-09-08 1957-10-29 Robert M Mcmanigal Wire cutter and insulation stripping apparatus
US2811196A (en) * 1952-03-15 1957-10-29 Republic Steel Corp Method and apparatus for delivering sheet material
US2816581A (en) * 1950-01-11 1957-12-17 Traben Josef Improvements in the hydraulic mechanism of a circular saw
US2849230A (en) * 1956-07-19 1958-08-26 Danly Mach Specialties Inc Hydraulically clamped stock feed assembly for power presses
US2929136A (en) * 1955-08-10 1960-03-22 Artos Engineering Co Wire length measuring, marking and severing equipment
US2934982A (en) * 1956-07-02 1960-05-03 Robert M Mcmanigal Wire cutter and insulation stripping apparatus
US3149516A (en) * 1960-04-22 1964-09-22 Reynolds Metals Co Machine with guide means for product
US3186278A (en) * 1963-01-02 1965-06-01 A J Gerrard Mfg Company Strap chopper
US3224312A (en) * 1963-09-09 1965-12-21 Jeddeloh Bros Sweed Mills Inc Timed stock cutter with multiple edged knives
US3251253A (en) * 1963-08-05 1966-05-17 Edward Floyd Eubanks Apparatus for working filamentary materials
US3304023A (en) * 1963-06-04 1967-02-14 United Eng Foundry Co Method and apparatus for coiling strip
US3647127A (en) * 1970-04-30 1972-03-07 Littell Machine Co F J Feeding apparatus for strip material
FR2285325A2 (en) * 1974-09-18 1976-04-16 Schuler Gmbh L Feed device has rollers for workpieces form of ribbon or strip, particularly on rapid presses
US3958480A (en) * 1973-08-09 1976-05-25 Schloemann-Siemag Aktiengesellschaft Longitudinal shear
US3990335A (en) * 1973-10-05 1976-11-09 Kemlite Corporation Machine for trimming the edges of panels
US4316570A (en) * 1980-04-28 1982-02-23 The B. F. Goodrich Company Apparatus for feeding strips of rubber compositions simultaneously into an extruder
US4473193A (en) * 1983-01-13 1984-09-25 Guild International Inc. Helical feed-in mechanism for strip accumulator
EP0228717A2 (en) * 1985-12-02 1987-07-15 Fuji Photo Film Co., Ltd. Web slitting apparatus
US5904094A (en) * 1997-09-09 1999-05-18 Heidelberger Druckmaschinen Ag Roller arrangement in a folding apparatus of a web-fed rotary printing press
US6435394B1 (en) * 1997-07-11 2002-08-20 Fico B.V. Transporter for lead frames and transport assembly
EP1348500A1 (en) * 2002-03-27 2003-10-01 Bruderer Ag Device to intermittently feed a band-shaped blank into a press

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704576A (en) * 1955-03-22 Sheet material dispensing machine
US2647455A (en) * 1947-02-24 1953-08-04 Denison Eng Co Hydraulic apparatus
US2613739A (en) * 1948-01-23 1952-10-14 Lefere Forge & Machine Company Shear accessory
US2583051A (en) * 1948-03-13 1952-01-22 Coe Mfg Co Veneer clipper
US2660427A (en) * 1948-06-26 1953-11-24 Haller John Feeding device for sheet material
US2634973A (en) * 1948-12-21 1953-04-14 Peter J Hahn & Sons Company Foil feeding device for stamping machines
US2619347A (en) * 1949-06-20 1952-11-25 Le Roy Krasley Cloth handling and transferring means
US2626146A (en) * 1949-07-08 1953-01-20 Henry G Goetz Precision strip feed mechanism
US2816581A (en) * 1950-01-11 1957-12-17 Traben Josef Improvements in the hydraulic mechanism of a circular saw
US2638821A (en) * 1950-07-12 1953-05-19 John R Baumgartner Blank forming press feed
US2811196A (en) * 1952-03-15 1957-10-29 Republic Steel Corp Method and apparatus for delivering sheet material
US2787954A (en) * 1953-06-22 1957-04-09 Smith Paper Mills Ltd Howard Paper roll marking apparatus
US2745663A (en) * 1953-08-14 1956-05-15 United States Steel Corp Strip supporting device
US2811063A (en) * 1953-09-08 1957-10-29 Robert M Mcmanigal Wire cutter and insulation stripping apparatus
US2929136A (en) * 1955-08-10 1960-03-22 Artos Engineering Co Wire length measuring, marking and severing equipment
US2934982A (en) * 1956-07-02 1960-05-03 Robert M Mcmanigal Wire cutter and insulation stripping apparatus
US2849230A (en) * 1956-07-19 1958-08-26 Danly Mach Specialties Inc Hydraulically clamped stock feed assembly for power presses
US3149516A (en) * 1960-04-22 1964-09-22 Reynolds Metals Co Machine with guide means for product
US3186278A (en) * 1963-01-02 1965-06-01 A J Gerrard Mfg Company Strap chopper
US3304023A (en) * 1963-06-04 1967-02-14 United Eng Foundry Co Method and apparatus for coiling strip
US3251253A (en) * 1963-08-05 1966-05-17 Edward Floyd Eubanks Apparatus for working filamentary materials
US3224312A (en) * 1963-09-09 1965-12-21 Jeddeloh Bros Sweed Mills Inc Timed stock cutter with multiple edged knives
US3647127A (en) * 1970-04-30 1972-03-07 Littell Machine Co F J Feeding apparatus for strip material
US3958480A (en) * 1973-08-09 1976-05-25 Schloemann-Siemag Aktiengesellschaft Longitudinal shear
US3990335A (en) * 1973-10-05 1976-11-09 Kemlite Corporation Machine for trimming the edges of panels
FR2285325A2 (en) * 1974-09-18 1976-04-16 Schuler Gmbh L Feed device has rollers for workpieces form of ribbon or strip, particularly on rapid presses
US4316570A (en) * 1980-04-28 1982-02-23 The B. F. Goodrich Company Apparatus for feeding strips of rubber compositions simultaneously into an extruder
US4473193A (en) * 1983-01-13 1984-09-25 Guild International Inc. Helical feed-in mechanism for strip accumulator
EP0228717A2 (en) * 1985-12-02 1987-07-15 Fuji Photo Film Co., Ltd. Web slitting apparatus
US4757732A (en) * 1985-12-02 1988-07-19 Fuji Photo Film Co., Ltd. Web slitting apparatus
EP0228717A3 (en) * 1985-12-02 1989-03-22 Fuji Photo Film Co., Ltd. Web slitting apparatus web slitting apparatus
US6435394B1 (en) * 1997-07-11 2002-08-20 Fico B.V. Transporter for lead frames and transport assembly
US5904094A (en) * 1997-09-09 1999-05-18 Heidelberger Druckmaschinen Ag Roller arrangement in a folding apparatus of a web-fed rotary printing press
EP1348500A1 (en) * 2002-03-27 2003-10-01 Bruderer Ag Device to intermittently feed a band-shaped blank into a press
US20030183059A1 (en) * 2002-03-27 2003-10-02 Bruderer Ag Apparatus for a intermittent feeding of a strip shaped blank
SG106677A1 (en) * 2002-03-27 2004-10-29 Bruderer Ag An apparatus for a intermittent feeding of a strip shaped blank

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